The Zello PTT app is installed on staff computers in New Media, Customer Service, Reference, Teen Room, Topeka Room, Gallery and Circulation work room. Each of these computers will have an external microphone and speakers.
When the desktop application is launched it will display a list of contacts. For most communications you will select "All" and press and hold the Zello button while you speak into the softphone to communicate your message. Or press the green call button on the Plantronics softphone to toggle on the PTT app and press the green call button again once you are done broadcasting your message.